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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">mimmun</journal-id><journal-title-group><journal-title xml:lang="ru">Медицинская иммунология</journal-title><trans-title-group xml:lang="en"><trans-title>Medical Immunology (Russia)</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1563-0625</issn><issn pub-type="epub">2313-741X</issn><publisher><publisher-name>SPb RAACI</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.15789/1563-0625-FCA-16716</article-id><article-id custom-type="elpub" pub-id-type="custom">mimmun-3088</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>КРАТКИЕ СООБЩЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SHORT COMMUNICATIONS</subject></subj-group></article-categories><title-group><article-title>Проточно-цитометрический анализ взаимодействия моноклональных антител к различным эпитопам молекулы БТШ70 с внутриклеточными и мембрано-ассоциированными формами этого протеина</article-title><trans-title-group xml:lang="en"><trans-title>Flow cytometric analysis of the interaction of monoclonal antibodies to various epitopes of the HSP70 molecule with intracellular and membrane-associated forms of this protein</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Овсяникова</surname><given-names>О. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Ovsyanikova</surname><given-names>O. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Овсяникова Ольга Викторовна – аспирант.</p><p>119991, Москва, Ленинские горы, 1</p><p>Тел.: 8 (495) 330-40-11</p></bio><bio xml:lang="en"><p>Olga V. Ovsyanikova - Postgraduate student, Lomonosov Moscow State University; Research Engineer, Department of Immunology, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Science.</p><p>1 Leninskie Gory Moscow 119991</p><p>Phone: +7 (495) 330-40-11</p></bio><email xlink:type="simple">olgaovsyanickova@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шустова</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shustova</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Младший научный сотрудник.</p><p>Москва</p></bio><bio xml:lang="en"><p>Junior Research Associate, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Science.</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гречихина</surname><given-names>М. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Grechikhina</surname><given-names>M. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Младший научный сотрудник.</p><p>Москва</p></bio><bio xml:lang="en"><p>Junior Research Associate, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Science.</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Сапожников</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Sapozhnikov</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Д.б.н., профессор, главный научный сотрудник.</p><p>Москва</p></bio><bio xml:lang="en"><p>PhD, MD (Biology), Professor, Chief Research Associate, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Science.</p><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУН «Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова» Российской академии наук; ФГБОУ ВО «Московский государственный университет имени М.В. Ломоносова»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Science; Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБУН «Институт биоорганической химии им. академиков М.М. Шемякина и Ю.А. Овчинникова» Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry of the Russian Academy of Science</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>21</day><month>09</month><year>2024</year></pub-date><volume>26</volume><issue>5</issue><fpage>905</fpage><lpage>912</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Овсяникова О.В., Шустова О.А., Гречихина М.В., Сапожников А.М., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Овсяникова О.В., Шустова О.А., Гречихина М.В., Сапожников А.М.</copyright-holder><copyright-holder xml:lang="en">Ovsyanikova O.V., Shustova O.A., Grechikhina M.V., Sapozhnikov A.M.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.mimmun.ru/mimmun/article/view/3088">https://www.mimmun.ru/mimmun/article/view/3088</self-uri><abstract><p>В настоящее время накопилось большое число сведений о том, что многие разновидности опухолевых клеток, в отличие от их нетрансформированных форм, характеризуются транслокацией внутриклеточных белков теплового шока 70 кДа (БТШ70) на поверхность плазматической мембраны. Это позволило отнести БТШ70, экспонированные на клеточной поверхности, к опухоль-ассоциированным антигенам и явилось основанием для поиска возможностей практического использования данного феномена в клинической онкологии. Существенным аргументом в пользу перспективности таких исследований послужила обнаруженная способность БТШ70, представленных на поверхности клеток-мишеней, усиливать цитотоксическую активность NK-клеток. В связи с этим, работы многих исследовательских групп посвящены разработке подходов к повышению уровня мембрано-ассоциированных БТШ70 в опухолевых тканях. В то же время, учитывая присутствие таких протеинов на поверхности многих разновидностей опухолевых клеток, в качестве одного из перспективных подходов можно рассматривать применение для противоопухолевой терапии моноклональных антител, взаимодействующих с молекулами БТШ70. Хорошо известно, что препараты антител, селективно взаимодействующих с раковыми клетками, могут применяться для таргетной противоопухолевой иммунотерапии.</p><p>Ранее нами была получена панель из шести В-клеточных гибридом, продуцирующих моноклональные антитела к индуцируемой и конститутивной формам БТШ70 человека, направленные к различным эпитопам этой молекулы. Существенно, что три разновидности гибридом из этой панели, продуцируют антитела со специфичностью к сайтами связывания на С-концевом домене молекулы БТШ70, а вторая тройка моноклонов антител была специфична к эпитопам на N-концевом домене БТШ70, в то время как практически все известные коммерческие антитела взаимодействуют только с С-концевыми фрагментами БТШ70. В данной работе мы провели сравнительное исследование связывания полученных антител с этими протеинами, локализующимися в разных типах клеток как во внутриклеточном пространстве, так и на клеточной поверхности.</p><p>Полученные результаты позволяют рассматривать выявленные разновидности моноклональных антител, наиболее эффективно распознающих поверхностные БТШ70, как перспективную основу для создания новых препаратов для противоопухолевой иммунотерапии.</p></abstract><trans-abstract xml:lang="en"><p>Currently, a large amount of data has demonstrated that many types of tumor cells, in contrast to their non-transformed forms, are characterized by the translocation of intracellular heat shock proteins 70 kDa (HSP70) to the surface of the plasma membrane. This made it possible to classify HSP70 exposed on the cell surface as a tumor-associated antigen and was the basis for searching the opportunities for the practical use of this phenomenon in clinical oncology. A significant argument in favor of the prospects of such studies was the discovered ability of HSP70, present on the surface of target cells, to enhance the cytotoxic activity of NK cells. In this regard, the work of many research groups is devoted to developing approaches to increasing the level of membrane-associated HSP70 in tumor tissues. At the same time, given the presence of such proteins on the surface of many types of tumor cells, the use of monoclonal antibodies that interact with HSP70 molecules for antitumor therapy can be considered as one of the promising approaches. It is well known that antibody preparations that selectively interact with cancer cells can be used for targeted antitumor immunotherapy. Previously, we obtained a panel of six B cell hybridomas producing monoclonal antibodies to the inducible and constitutive forms of human HSP70, directed to various epitopes of this molecule. It is significant that three varieties of hybridomas produced antibodies with specificity for binding sites on the C-terminal domain of the HSP70 molecule, and the second trio of monoclonal antibodies were specific to epitopes on the N-terminal domain of HSP70, while almost all known commercial antibodies interact only with C-terminal fragments of HSP70. In this work, we conducted a comparative study of the binding of the obtained antibodies to these proteins localized in different types of cells, both in the intracellular space and on the cell surface.</p><p>The results obtained allow us to consider the identified varieties of monoclonal antibodies that most effectively recognize surface HSP70 as a promising basis for the creation of new drugs for antitumor immunotherapy.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>белки теплового шока</kwd><kwd>БТШ70</kwd><kwd>моноклональные антитела</kwd><kwd>противоопухолевая иммунотерапия</kwd><kwd>линии опухолевых клеток</kwd><kwd>проточно-цитометрический анализ</kwd></kwd-group><kwd-group xml:lang="en"><kwd>heat shock proteins</kwd><kwd>HSP70</kwd><kwd>monoclonal antibodies</kwd><kwd>antitumor immunotherapy</kwd><kwd>tumor cell lines</kwd><kwd>flow cytometric analysis</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Российского научного фонда (грант № 23-15-00472).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Abès R., Teillaud J.L. 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